LSCF-SDC core-shell high-performance durable composite cathode

被引：53

作者：

Lee, Seungho ^{[1
]}

Song, Hwa Seob ^{[1
]}

Hyun, Sang Hoon ^{[1
]}

Kim, Joosun ^{[2
]}

Moon, Jooho ^{[1
]}

机构：

[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea

[2] Korea Inst Sci & Technol, Ctr Energy Mat Res, Seoul 136791, South Korea

来源：

JOURNAL OF POWER SOURCES | 2010年 / 195卷 / 01期

关键词：

Cathode; Durability; Composite; Core-shell particles; Solid oxide fuel cell; IMPEDANCE;

D O I：

10.1016/j.jpowsour.2009.06.079

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Core-shell type La0.6Sr0.4Co0.2Fe0.8O3-d (LSCF)-Sm0.2Ce0.8O2-d (SDC) powders are synthesized to achieve a high-performance durable cathode for intermediate temperature solid oxide fuel cells (IT-SOFCs). The SDC core size is controlled so that all core particles are surrounded by the LSCF particles with no unattached spots. Such a core-shell composite cathode develops an ideal microstructure with improved phase contiguity, homogeneity, and maximized triple-phase boundary density. The cathode that involves an SDC core of 500 nm exhibits the lowest interfacial polarization resistance (0.265 Omega cm(2) at 650 degrees C), as well as long-term stability during both thermo-cyclic and electrochemically accelerated tests. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：118 / 123

页数：6

共 15 条

[1] Detailed characterization of anode-supported SOFCs by impedance spectroscopy [J].

Barfod, Rasmus ;

Mogensen, Mogens ;

Klemenso, Trine ;

Hagen, Anke ;

Liu, Yi-Lin ;

Hendriksen, Peter Vang .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (04) :B371-B378

[2] Electrochemical characteristics of LSCF-SDC composite cathode for intermediate temperature SOFC [J].

Fu, Changjing ;

Sun, Kening ;

Zhang, Naiqing ;

Chen, Xinbing ;

Zhou, Derui .

ELECTROCHIMICA ACTA, 2007, 52 (13) :4589-4594

[3] Microstructure control of SOFC cathodes using the self-organizing behavior of LSM/ScSZ composite powder material prepared by spray pyrolysis [J].

Hagiwara, Akifusa ;

Hobara, Natsuro ;

Takizawa, Koichi ;

Sato, Kazuyoshi ;

Abe, Hiroya ;

Naito, Makio .

SOLID STATE IONICS, 2007, 178 (15-18) :1123-1134

[4] A method to separate process contributions in impedance spectra by variation of test conditions [J].

Jensen, Soren Hojgaard ;

Hauch, Anne ;

Hendriksen, Peter Vang ;

Mogensen, Mogens ;

Bonanos, Nikolaos ;

Jacobsen, Torben .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2007, 154 (12) :B1325-B1330

[5] Impedance of solid oxide fuel cell LSM/YSZ composite cathodes [J].

Jorgensen, MJ ;

Mogensen, M .

JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2001, 148 (05) :A433-A442

[6] Performance/structure correlation for composite SOFC cathodes [J].

Juhl, M ;

Primdahl, S ;

Manon, C ;

Mogensen, M .

JOURNAL OF POWER SOURCES, 1996, 61 (1-2) :173-181

[7] Interlayer-free nanostructured La0.58Sr0.4Co0.2 Fe0.8O3-δ cathode on scandium stabilized zirconia electrolyte for intermediate-temperature solid oxide fuel cells [J].

Lee, Seungho ;

Song, Hwa Seob ;

Hyun, Sang Hoon ;

Kim, Joosun ;

Moon, Jooho .

JOURNAL OF POWER SOURCES, 2009, 187 (01) :74-79

[8] Fabrication of Sm0.5Sr0.5CoO3-δ-Sm0.1Ce0.9O2-δ cathodes for solid oxide fuel cells using combustion CVD [J].

Liu, Y ;

Rauch, W ;

Zha, SW ;

Liu, ML .

SOLID STATE IONICS, 2004, 166 (3-4) :261-268

[9] Trichinellosis: Now and forevermore? [J].

Murrell, KD .

PARASITE, 2001, 8 (02) :S11-S13

[10] Silver infiltrated La0.6Sr0.4Co0.2Fe0.8O3 cathodes for intermediate temperature solid oxide fuel cells [J].

Sakito, Y. ;

Hirano, A. ;

Imanishi, N. ;

Takeda, Y. ;

Yamamoto, O. ;

Liu, Y. .

JOURNAL OF POWER SOURCES, 2008, 182 (02) :476-481

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